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1.
Occurring unexpectedly or unintentionally after doing something so stupid, careless or negligent that it should have been obvious that you would run into trouble.
The officer stupidentally shot three other officers while trying to stop a pit bull that was attacking them.
by JP Burke July 24, 2006
 
2.
Occurring unexpectedly or unintentionally after doing something so stupid or careless that it should have been obvious that you would run into trouble.
The officer stupidentally shot three other officers while trying to shoot a pit bull that was attacking them.
by JP Burke July 23, 2006